Nut-lock for rail-splices.



v No. 68!,904. Patented Sept. 3, 90L

A. H. ARMSTRONG. NUT LOCK FOB RAIL SPLICES. (Application filed my 21, 1901.) 040 Model.) v

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UNITED STATES PATENT OFFICE,

ARTHUR H. ARMSTRONG, OF SANDWICH, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO SAMUEL M. EINSTEIN, OF 'ATTLEBORO, MASSA- OHUSETTS.

INUT-'-LOCK FOR RAIL-SPLICES.

SPECIFICATION forming part of Letters'latent No. 681,904, dated September 3, 1901.

Application filed May 21, 1901.

To all whom it may concern:

Be it known that I, ARTHUR H. ARM- STRONG, a citizen of the United States, residing at Sandwich, in the county of Barnstable and State of Massachusetts, have invented a new and useful Improvement in Nut-Locks for Rail-splices, of which the following is a specification.

This invention has reference to an improvement in nut-locks for rail-splices and similar deviceswherebythenutsareheld againstturn ing on the bolts; and it consists in the peculiar construction and arrangements whereby the nut-lock is held by the head of one bolt and the nuts of two adjacent bolts are held by the nut-lock.

Figure 1 is a side view of arail-splice, showing my improved nut-lock. Fig. 2 is a longitudinal sectional view of the rail-splice. Fig. 3 is a perspective view of my improved nut-lock plate. Fig. 4 is a side view of the rail-splice, showing a'modified form of the nut-lock plate.

In the drawings, a a indicate the abutting ends of the rail; b b, the fish-plates; c' and o", the nut-lock plates, and d cl the bolts. The lock-plates have the central hole a and the edges 0 0 which bear on one of the sides of the nuts. I

In carrying out the invention I insert the bolts d d from one side through the fish-plate and the rails of the joint and the bolts d d from the other side,securing the lock-plates on the two sides by placing the same under the heads of the bolts nearest the joint d and placing the edges 0 c of the lock-plates against the nuts d of the adjacent bolts. One end of the lock-plates is bent outward, as is indicated in Fig. 2 in broken lines, until the nut controlled by this end is screwed up, when Serial No. 61 296. (No model.)

the lock-plate is bent back, so that the edge or edges 0' bear on the nut. The modified form of lock-plate is provided with one looking edge at each end and is firmly secured by the head of the bolt bearing on the lockplate. It difiers from the preferred form of the lock-plate shown in Fig. 3 only in that the latter has forked ends, in which two looking edges bear on the nuts.

A rail-splice constructed after my invention will resist all the blows and jars without loosening the nut-lock or allowing the nuts to turn on the bolts.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 1. In a rail-splice, the combination with the ends of the rails and the fish-plates, of centrally-perforated lock-plates having locking" edges at their ends, and bolts inserted from the opposite sides to secure the lock-plates, the ends of the two lock-plates being in contact with the nuts 62 of the adjacent bolts, as described.

2. In a rail-splice, the combination with the rails a a abutting to form the joint (1 the fish-plates Z) Z) overlapping the joint, the bolts cl and d nearest the joint inserted from opposite sides through the nut-lock plate, and the centrally-perforated nut-lock plate secured by a bolt-head and having the ends in contact with the bolts of the adjacent nuts, as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR H. ARMSTRONG.

Witnesses:

ADA E. HAGERTY, JOSEPH A. MILLER. 

